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Overview
Comment::-) (CVS 100)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:1d4fe5599ed0bae18dba5842ab7ea1d34b8ec3ad
User & Date: drh 2000-06-16 20:51:26
Context
2000-06-17
13:12
:-) (CVS 101) check-in: 6ed35a1d user: drh tags: trunk
2000-06-16
20:51
:-) (CVS 100) check-in: 1d4fe559 user: drh tags: trunk
2000-06-15
16:49
:-) (CVS 99) check-in: ac38f460 user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/expr.c. 

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** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines used for processing expressions
**
** $Id: expr.c,v 1.15 2000/06/11 23:50:13 drh Exp $
*/
#include "sqliteInt.h"

/*
** Walk an expression tree.  Return 1 if the expression is constant
** and 0 if it involves variables.
*/
................................................................................
    case TK_STAR:
    case TK_MINUS:
    case TK_SLASH: {
      sqliteExprCode(pParse, pExpr->pLeft);
      sqliteExprCode(pParse, pExpr->pRight);
      sqliteVdbeAddOp(v, op, 0, 0, 0, 0);
      break;






    }
    case TK_LT:
    case TK_LE:
    case TK_GT:
    case TK_GE:
    case TK_NE:
    case TK_EQ: 








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** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines used for processing expressions
**
** $Id: expr.c,v 1.16 2000/06/16 20:51:26 drh Exp $
*/
#include "sqliteInt.h"

/*
** Walk an expression tree.  Return 1 if the expression is constant
** and 0 if it involves variables.
*/
................................................................................
    case TK_STAR:
    case TK_MINUS:
    case TK_SLASH: {
      sqliteExprCode(pParse, pExpr->pLeft);
      sqliteExprCode(pParse, pExpr->pRight);
      sqliteVdbeAddOp(v, op, 0, 0, 0, 0);
      break;
    }
    case TK_CONCAT: {
      sqliteExprCode(pParse, pExpr->pLeft);
      sqliteExprCode(pParse, pExpr->pRight);
      sqliteVdbeAddOp(v, OP_Concat, 2, 0, 0, 0);
      break;
    }
    case TK_LT:
    case TK_LE:
    case TK_GT:
    case TK_GE:
    case TK_NE:
    case TK_EQ:

Changes to src/parse.y. 

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**
*************************************************************************
** This file contains SQLite's grammar for SQL.  Process this file
** using the lemon parser generator to generate C code that runs
** the parser.  Lemon will also generate a header file containing
** numeric codes for all of the tokens.
**
** @(#) $Id: parse.y,v 1.20 2000/06/09 14:14:33 drh Exp $
*/
%token_prefix TK_
%token_type {Token}
%extra_argument {Parse *pParse}
%syntax_error {
  sqliteSetString(&pParse->zErrMsg,"syntax error",0);
  pParse->sErrToken = TOKEN;
................................................................................
%left OR.
%left AND.
%right NOT.
%left EQ NE ISNULL NOTNULL IS LIKE GLOB BETWEEN IN.
%left GT GE LT LE.
%left PLUS MINUS.
%left STAR SLASH.

%right UMINUS.

%type expr {Expr*}
%destructor expr {sqliteExprDelete($$);}

expr(A) ::= LP expr(X) RP.   {A = X;}
expr(A) ::= ID(X).           {A = sqliteExpr(TK_ID, 0, 0, &X);}
................................................................................
  A = sqliteExpr(TK_GLOB, X, Y, 0);
  A = sqliteExpr(TK_NOT, A, 0, 0);
}
expr(A) ::= expr(X) PLUS expr(Y).  {A = sqliteExpr(TK_PLUS, X, Y, 0);}
expr(A) ::= expr(X) MINUS expr(Y). {A = sqliteExpr(TK_MINUS, X, Y, 0);}
expr(A) ::= expr(X) STAR expr(Y).  {A = sqliteExpr(TK_STAR, X, Y, 0);}
expr(A) ::= expr(X) SLASH expr(Y). {A = sqliteExpr(TK_SLASH, X, Y, 0);}

expr(A) ::= expr(X) ISNULL.        {A = sqliteExpr(TK_ISNULL, X, 0, 0);}
expr(A) ::= expr(X) NOTNULL.       {A = sqliteExpr(TK_NOTNULL, X, 0, 0);}
expr(A) ::= NOT expr(X).           {A = sqliteExpr(TK_NOT, X, 0, 0);}
expr(A) ::= MINUS expr(X). [UMINUS]   {A = sqliteExpr(TK_UMINUS, X, 0, 0);}
expr(A) ::= PLUS expr(X). [UMINUS]    {A = X;}
expr(A) ::= LP select(X) RP. {
  A = sqliteExpr(TK_SELECT, 0, 0, 0);








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**
*************************************************************************
** This file contains SQLite's grammar for SQL.  Process this file
** using the lemon parser generator to generate C code that runs
** the parser.  Lemon will also generate a header file containing
** numeric codes for all of the tokens.
**
** @(#) $Id: parse.y,v 1.21 2000/06/16 20:51:26 drh Exp $
*/
%token_prefix TK_
%token_type {Token}
%extra_argument {Parse *pParse}
%syntax_error {
  sqliteSetString(&pParse->zErrMsg,"syntax error",0);
  pParse->sErrToken = TOKEN;
................................................................................
%left OR.
%left AND.
%right NOT.
%left EQ NE ISNULL NOTNULL IS LIKE GLOB BETWEEN IN.
%left GT GE LT LE.
%left PLUS MINUS.
%left STAR SLASH.
%left CONCAT.
%right UMINUS.

%type expr {Expr*}
%destructor expr {sqliteExprDelete($$);}

expr(A) ::= LP expr(X) RP.   {A = X;}
expr(A) ::= ID(X).           {A = sqliteExpr(TK_ID, 0, 0, &X);}
................................................................................
  A = sqliteExpr(TK_GLOB, X, Y, 0);
  A = sqliteExpr(TK_NOT, A, 0, 0);
}
expr(A) ::= expr(X) PLUS expr(Y).  {A = sqliteExpr(TK_PLUS, X, Y, 0);}
expr(A) ::= expr(X) MINUS expr(Y). {A = sqliteExpr(TK_MINUS, X, Y, 0);}
expr(A) ::= expr(X) STAR expr(Y).  {A = sqliteExpr(TK_STAR, X, Y, 0);}
expr(A) ::= expr(X) SLASH expr(Y). {A = sqliteExpr(TK_SLASH, X, Y, 0);}
expr(A) ::= expr(X) CONCAT expr(Y). {A = sqliteExpr(TK_CONCAT, X, Y, 0);}
expr(A) ::= expr(X) ISNULL.        {A = sqliteExpr(TK_ISNULL, X, 0, 0);}
expr(A) ::= expr(X) NOTNULL.       {A = sqliteExpr(TK_NOTNULL, X, 0, 0);}
expr(A) ::= NOT expr(X).           {A = sqliteExpr(TK_NOT, X, 0, 0);}
expr(A) ::= MINUS expr(X). [UMINUS]   {A = sqliteExpr(TK_UMINUS, X, 0, 0);}
expr(A) ::= PLUS expr(X). [UMINUS]    {A = X;}
expr(A) ::= LP select(X) RP. {
  A = sqliteExpr(TK_SELECT, 0, 0, 0);

Changes to src/tokenize.c. 

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*************************************************************************
** An tokenizer for SQL
**
** This file contains C code that splits an SQL input string up into
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
**
** $Id: tokenize.c,v 1.11 2000/06/08 16:26:24 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include <stdlib.h>

/*
** All the keywords of the SQL language are stored as in a hash
................................................................................
      if( z[1]!='=' ){
        *tokenType = TK_ILLEGAL;
        return 2;
      }else{
        *tokenType = TK_NE;
        return 2;
      }









    }
    case ',': {
      *tokenType = TK_COMMA;
      return 1;
    }
    case '\'': case '"': {
      int delim = z[0];








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*************************************************************************
** An tokenizer for SQL
**
** This file contains C code that splits an SQL input string up into
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
**
** $Id: tokenize.c,v 1.12 2000/06/16 20:51:26 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include <stdlib.h>

/*
** All the keywords of the SQL language are stored as in a hash
................................................................................
      if( z[1]!='=' ){
        *tokenType = TK_ILLEGAL;
        return 2;
      }else{
        *tokenType = TK_NE;
        return 2;
      }
    }
    case '|': {
      if( z[1]!='|' ){
        *tokenType = TK_ILLEGAL;
        return 1;
      }else{
        *tokenType = TK_CONCAT;
        return 2;
      }
    }
    case ',': {
      *tokenType = TK_COMMA;
      return 1;
    }
    case '\'': case '"': {
      int delim = z[0];

Changes to test/expr.test. 

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#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing expressions.
#
# $Id: expr.test,v 1.7 2000/06/08 16:26:25 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Create a table to work with.
#
execsql {CREATE TABLE test1(i1 int, i2 int, r1 real, r2 real, t1 text, t2 text)}
................................................................................
test_expr expr-3.22 {t1='abc', t2='xyz'} {t1!=t2} 1
test_expr expr-3.23 {t1='xyz', t2='abc'} {t1!=t2} 1
test_expr expr-3.24 {t1='abc', t2='abc'} {t1!=t2} 0
test_expr expr-3.25 {t1=NULL, t2='hi'} {t1 isnull} 1
test_expr expr-3.26 {t1=NULL, t2='hi'} {t2 isnull} 0
test_expr expr-3.27 {t1=NULL, t2='hi'} {t1 notnull} 0
test_expr expr-3.28 {t1=NULL, t2='hi'} {t2 notnull} 1





test_expr expr-4.1 {t1='abc', t2='Abc'} {t1<t2} 0
test_expr expr-4.2 {t1='abc', t2='Abc'} {t1>t2} 1
test_expr expr-4.3 {t1='abc', t2='Bbc'} {t1<t2} 1
test_expr expr-4.4 {t1='abc', t2='Bbc'} {t1>t2} 0

test_expr expr-5.1 {t1='abc', t2='xyz'} {t1 LIKE t2} 0








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#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing expressions.
#
# $Id: expr.test,v 1.8 2000/06/16 20:51:26 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Create a table to work with.
#
execsql {CREATE TABLE test1(i1 int, i2 int, r1 real, r2 real, t1 text, t2 text)}
................................................................................
test_expr expr-3.22 {t1='abc', t2='xyz'} {t1!=t2} 1
test_expr expr-3.23 {t1='xyz', t2='abc'} {t1!=t2} 1
test_expr expr-3.24 {t1='abc', t2='abc'} {t1!=t2} 0
test_expr expr-3.25 {t1=NULL, t2='hi'} {t1 isnull} 1
test_expr expr-3.26 {t1=NULL, t2='hi'} {t2 isnull} 0
test_expr expr-3.27 {t1=NULL, t2='hi'} {t1 notnull} 0
test_expr expr-3.28 {t1=NULL, t2='hi'} {t2 notnull} 1
test_expr expr-3.29 {t1='xyz', t2='abc'} {t1||t2} {xyzabc}
test_expr expr-3.30 {t1=NULL, t2='abc'} {t1||t2} {abc}
test_expr expr-3.31 {t1='xyz', t2=NULL} {t1||t2} {xyz}
test_expr expr-3.32 {t1='xyz', t2='abc'} {t1||' hi '||t2} {{xyz hi abc}}

test_expr expr-4.1 {t1='abc', t2='Abc'} {t1<t2} 0
test_expr expr-4.2 {t1='abc', t2='Abc'} {t1>t2} 1
test_expr expr-4.3 {t1='abc', t2='Bbc'} {t1<t2} 1
test_expr expr-4.4 {t1='abc', t2='Bbc'} {t1>t2} 0

test_expr expr-5.1 {t1='abc', t2='xyz'} {t1 LIKE t2} 0

Changes to test/main.test. 

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#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is exercising the code in main.c.
#
# $Id: main.test,v 1.2 2000/06/08 16:26:25 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Tests of the sqlite_complete() function.
#
do_test main-1.1 {
................................................................................
do_test main-3.2 {
  catch {db close}
  file delete -force testdb
  sqlite db testdb
  set v [catch {execsql {SELECT * from T1 where ~x}} msg]
  lappend v $msg
} {1 {unrecognized token: "~"}}








do_test main-3.3 {
  catch {db close}
  file delete -force testdb
  sqlite db testdb
  execsql {
    create table T1(X REAL);








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#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is exercising the code in main.c.
#
# $Id: main.test,v 1.3 2000/06/16 20:51:26 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Tests of the sqlite_complete() function.
#
do_test main-1.1 {
................................................................................
do_test main-3.2 {
  catch {db close}
  file delete -force testdb
  sqlite db testdb
  set v [catch {execsql {SELECT * from T1 where ~x}} msg]
  lappend v $msg
} {1 {unrecognized token: "~"}}
do_test main-3.3 {
  catch {db close}
  file delete -force testdb
  sqlite db testdb
  set v [catch {execsql {SELECT a|b from T1 where x}} msg]
  lappend v $msg
} {1 {unrecognized token: "|"}}

do_test main-3.3 {
  catch {db close}
  file delete -force testdb
  sqlite db testdb
  execsql {
    create table T1(X REAL);

Changes to www/changes.tcl. 

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}


proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}





chng {2000 June 12} {
<li>Added the fcnt() function to the SQL interpreter.  The fcnt() function
    returns the number of database "Fetch" operations that have occurred.
    This function is designed for use in test scripts to verify that
    queries are efficient and appropriately optimized.  Fcnt() has no other
    useful purpose, as far as I know.</li>








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}


proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}

chng {2000 June 16} {
<li>Added the concatenate string operator (||)</li>
}

chng {2000 June 12} {
<li>Added the fcnt() function to the SQL interpreter.  The fcnt() function
    returns the number of database "Fetch" operations that have occurred.
    This function is designed for use in test scripts to verify that
    queries are efficient and appropriately optimized.  Fcnt() has no other
    useful purpose, as far as I know.</li>

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